Mobile communication system, base station apparatus, user apparatus and method
AssigneeNtt Docomo, Inc.
InventorsMamoru Sawahashi, Kenichi Higuchi, Nobuhiko Miki, Motohiro Tanno
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Abstract
In a mobile communication system, a downlink MBMS channel is transmitted from a plurality of cells in timing synchronized with each other. The system includes: a unit configured to collectively transit a notification of setting up an uplink line for responding to the downlink MBMS channel to a plurality of user apparatuses specified by an upper node of the base station apparatus; a unit configured to set up the uplink line for a user apparatus that responds to the notification; and a unit configured to transfer a signal received from each user apparatus via the uplink line to the upper node.
Claims11
A mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MBMS channel) is transmitted from a plurality of cells in timing synchronized with each other, comprising:
- a unit configured to collectively transit a notification of setting up an uplink line for responding to the downlink MBMS channel to a plurality of user apparatuses specified by an upper node of the base station apparatus;
- a unit configured to set up the uplink line for a user apparatus that responds to the notification;
- and
- a unit configured to transfer a signal received from each user apparatus via the uplink line to the upper node.
A base station apparatus for use in a mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MBMS channel) is transmitted from a plurality of cells in timing synchronized with each other, the base station apparatus comprising:
- a unit configured to collectively transit a notification of setting up an uplink line for responding to the downlink MBMS channel to a plurality of user apparatuses specified by an upper node of the base station apparatus;
- a unit configured to set up the uplink line for a user apparatus that responds to the notification;
- and
- a unit configured to transfer a signal received from each user apparatus via the uplink line to the upper node.
A method for use in a mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MBMS channel) is transmitted from a plurality of cells in timing synchronized with each other, comprising:
- a step in which a base station apparatus collectively transits a notification of setting up an uplink line for responding to the downlink MBMS channel to a plurality of user apparatuses specified by an upper node of the base station apparatus;
- a step of setting up the uplink line for a user apparatus that responds to the notification;
- and
- a step of transferring a signal received from each user apparatus via the uplink line to the upper node from the base station apparatus.
A mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MBMS channel) is transmitted from a plurality of cells in timing synchronized with each other, comprising:
- a unit configured to receive, from a user apparatus, a request for setting up an uplink line for responding to the downlink MBMS channel;
- a unit configured to set up the uplink line for the user apparatus;
- and
- a unit configured to transfer a signal received from each user apparatus via the uplink line to an upper node of a base station apparatus,
- wherein timing for receiving the request is one of timings that occur in a predetermined cycle that is predetermined in the mobile communication system.
A base station apparatus for use in a mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MBMS channel) is transmitted from a plurality of cells in timing synchronized with each other, the base station apparatus comprising:
- a unit configured to receive, from a user apparatus, a request for setting up an uplink line for responding to the downlink MBMS channel;
- a unit configured to set up the uplink line for the user apparatus;
- and
- a unit configured to transfer a signal received from each user apparatus via the uplink line to an upper node of the base station apparatus,
- wherein timing for receiving the request is one of timings that occur in a predetermined cycle that is predetermined in the mobile communication system.
A user apparatus for use in a mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MBMS channel) is transmitted from a plurality of cells in timing synchronized with each other, the user apparatus comprising:
- a unit configured to receive the downlink MBMS channel;
- a unit configured to transmit, to a base station apparatus, a request signal for requesting set-up of an uplink line for responding to the downlink MBMS channel;
- and
- a unit configured to transmit, to the base station apparatus, a response signal for responding to the downlink MBMS channel via the uplink line that is set up in response to the request signal,
- wherein timing for transmitting the request signal is one of timings that occur in a predetermined cycle that is predetermined in the mobile communication system.
A method for use in a mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MBMS channel) is transmitted from a plurality of cells in timing synchronized with each other, comprising:
- a step of receiving, from a user apparatus, a request for setting up an uplink line for responding to the downlink MEMS channel;
- a step of setting up the uplink line for the user apparatus;
- and
- a step of transferring a signal received from each user apparatus via the uplink line to an upper node of a base station apparatus,
- wherein timing for receiving the request is one of timings that occur in a predetermined cycle that is predetermined in the mobile communication system.
A mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MBMS channel) is transmitted from a plurality of cells in timing synchronized with each other, comprising:
- a unit configured to receive, from a user apparatus, a request for setting up an uplink line for responding to the downlink MBMS channel;
- a unit configured to collectively transmit a notification of setting up the uplink line to a plurality of user apparatuses for which the uplink line is set, and to set up the uplink line;
- and
- a unit configured to transfer a signal received from each user apparatus via the uplink line to an upper node of the base station apparatus,
- wherein timing for receiving the request is one of timings that occur in a predetermined cycle that is predetermined in the mobile communication system.
A mobile communication system in which a downlink channel based on a multimedia broadcast multicast service (downlink MEMS channel) is transmitted from a plurality of cells in timing synchronized with each other,
- wherein a band for the downlink MBMS channel is prepared separately from a band for an uplink unicast channel and a band for a downlink unicast channel, and
- an uplink line for responding to the downlink MBMS channel is set up by using the band for the uplink unicast channel.
Dependencies are inferred from the claim text.